飞机凝结尾的X形影子
两架飞机的飞机凝结尾，交叉成一个X，显示在图像的中间。它们在深蓝色背景下呈亮白色。在阳光照耀下的飞机凝结尾上方，可以看到高高的云层。低处的太阳在高处的云层上形成了一个黑影。一排建筑物横跨图像的下部。有关更多详细信息，请参阅说明。
天文·每日一图
影子
天文·每日一图
直指月亮的火箭烟尘影子
2024年2月11日 Rocket Plume Shadow Points to the Moon Image Credit: Pat McCracken, NASA Explanation: Why would the shadow of a rocket’s launch plume point toward the Moon? In early 2001 during a launch of the space shuttle Atlantis, the Sun, Earth, Moon, and rocket were all properly aligned for th
天文·每日一图
山与月的影子
2024年1月22日 Shadows of Mountain and Moon Image Credit & Copyright: Enzo Massa Micon Explanation: Can the Moon and a mountain really cast similar shadows? Yes, but the division between light and dark does not have to be aligned. Pictured, a quarter moon was captured above the mountain Grivola in I
